There is a discussion on the Vivitar equivalent here. I'm pretty sure it's the same lens.
In summary it's bloody good value for money, quite sharp, but flares a little more than I would like. Also vignettes a bit wide open. But having said that I love mine and have no intention of shelling out for a Nikkor at maybe 10 times the cost
Russ, you made this same unfounded and unsupported statement in the other thread, but you used a different name then...
The Vivitar is indeed made by Cosina, as are The Nikon FM-10 the Nikon FE-10 and the excellent range of Voigtlander cameras and lenses.
Russ, on what basis do you say the Vivitar is "not a decent lens"? This is a pretty broad statement with no supporting argument - a bit flimsy to say the least. There are a number of users on this site who get good results with the Vivitar / Cosina, myself among them. It may not be as good as a Nikkor or even a Tokina, but it certainly IS a "decent lens"!
I've taken the liberty of re-formatting your reply, as it seems to have got caught up in my sig code:
I suppose the question has to do with the word decent. it is alright for someone wanting to dabble into the wide angle arena. However, if you are concerned about the resulting snaps being of high quality or of professional caliber, no, it will not deliver. it's just a matter of how discerning one is in regards to the quality and publishing ability of their work.
Fair comment I suppose, and there is (in theory anyhow) likely to be a lot more sample variation on a lower priced product. However, there are at least a few good samples of this lens around capable of delivering top quality performance.
Have a look at Outdoor Photography No 26 July 2002, pages 28 & 29 - a two page spread (one image) taken with a Cosina 19-35. Outdoor Photography are pretty choosy about the images they print, and the sizes they print them.
Paul Fisher Nikonian in Perth, Western Australia My home page
If it is indeed the same lens as the Cosina (quite possible, it is sold under different names), it is quite good value for money. Not as good as the Tokina indeed, but it costs half as well.
I have the Cosina and it's very nice indeed. Would I like something better: yes. Would I buy it again: yes (at least if I needed a lens in the range and couldn't afford the better lenses available to me).
It has a purpose. It is ideal to see if a wideangle is for you. It's also a pretty good backup lens for use in situations where you don't want to risk that $2000 Nikkor.
any size is fullframe for a given definition of frame